for the past 4 days i have been unable to eat anything, when i eat anything i feel like i am about to vomit even if it is just two bites of something. I also have been getting stabbing pains in both my ribs/lungs, this pain started this morning at 430 and did not go away until 12 this afternoon, and it still comes and goes with pain. Does any one know what the cause of this could be?